EP0759790A1 - Insert delimitant une chambre de dosage d'un inhalateur - Google Patents
Insert delimitant une chambre de dosage d'un inhalateurInfo
- Publication number
- EP0759790A1 EP0759790A1 EP95917384A EP95917384A EP0759790A1 EP 0759790 A1 EP0759790 A1 EP 0759790A1 EP 95917384 A EP95917384 A EP 95917384A EP 95917384 A EP95917384 A EP 95917384A EP 0759790 A1 EP0759790 A1 EP 0759790A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- expulsion
- product
- compressed air
- conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M15/00—Inhalators
- A61M15/0065—Inhalators with dosage or measuring devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
- A61M11/02—Sprayers or atomisers specially adapted for therapeutic purposes operated by air or other gas pressure applied to the liquid or other product to be sprayed or atomised
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/06—Solids
- A61M2202/064—Powder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/07—General characteristics of the apparatus having air pumping means
- A61M2205/071—General characteristics of the apparatus having air pumping means hand operated
- A61M2205/073—Syringe, piston type
Definitions
- the present invention relates to a device for inhaling product in powder form and more particularly to an insert delimiting precisely the metering chamber of said inhalation device.
- Powder inhalers are today very widespread and find one of their main applications in the pharmaceutical field and in particular in that of drugs treating asthma. Such an inhaler is disclosed in particular in document EP-632,734.
- An object of the invention is to provide a means for solving the aforementioned problem while avoiding the aforementioned drawbacks.
- the present invention therefore relates to a device for inhaling product in powder form comprising a body, a compressed air pump comprising a pump body and a pump chamber, an expulsion duct connected via a valve to the pump chamber and opening into an outlet nozzle through which the product is dispensed, a product reservoir connected to said expulsion conduit, and a product metering chamber fixedly disposed in said expulsion conduit, characterized in that said metering chamber comprises an insert projecting from an upper part, inside said expulsion conduit, in a sealed manner through an opening provided for this purpose in said conduit, said upper part of said insert comprising a profile adapted to retain a predetermined dose of product.
- the term "fixedly arranged in said expulsion conduit” means that the metering chamber cannot be moved out of the expulsion conduit, but is on the contrary at all times disposed in said expulsion conduit.
- this metering chamber may include end zones extending beyond said expulsion conduit, and it may also be of deformable configuration, while remaining permanently disposed in the conduit. expulsion.
- the metering chamber is sealed in a sealed manner at the reservoir, by means of a removable sealing device located inside said tank.
- said insert comprises a non-deformable lower part fixed to a support part, said support part forming part of the body of the device and being traversed by said expulsion duct, and an upper part extending said lower part and projecting inside the sealed expulsion conduit, said upper part comprising a side wall having approximately a frustoconical shape and, in its central part, facing the reservoir, a recess delimiting the metering chamber, the dose of product retained in said metering chamber being expelled, upon actuation of the device, by the compressed air sent by the pump through said expulsion conduit, in the direction of said outlet nozzle.
- said insert is completely rigid and non-deformable, its upper part projecting in the expulsion duct extending over part of the height of said expulsion duct so as to preserve a passage for the compressed air inside said expulsion duct.
- said insert comprises under said recess delimiting the metering chamber, a stud extending to a fixed element of the device and pressing on it to reinforce the rigidity of said insert.
- This fixed element can for example be the pump body.
- Another object of the invention is to guarantee total sealing of the dose of product to be dispensed until it is expelled from the inhaler.
- a main disadvantage of some inhalers is that between the time when the dosage is loaded with the dose of product to be emitted, and the moment the device is actually actuated, said dose of product is located in the expulsion duct in contact with air. If the device is not activated immediately after loading the dosing chamber, the product may therefore be contaminated, and, if the device is used in a humid environment, the powder may agglomerate under the effect of humidity. . The product will then be distributed in compact form and will lose much of its effectiveness.
- the present invention therefore also aims to provide an inhalation device comprising a metering chamber completely sealed until the device is actuated, thus avoiding the aforementioned drawbacks.
- the present invention therefore also relates, in a second embodiment, to an inhalation device comprising an insert the upper part of which is deformable under the effect of the pressure of the compressed air, the said upper part of the insert extending over the entire height of the expulsion conduit to come to bear on its upper wall and thus seal it when the device is not actuated, said metering chamber therefore being insulated in a completely sealed manner , at the level of the reservoir, by a removable sealing device located inside the reservoir, and at the level of the expulsion duct, by the upper part of the insert.
- said upper part of said insert comprises in its side wall, at the junction of the upper part of the insert with the lower part of the insert, a thinned zone forming a flexible hinge at which said upper part of said insert deforms under the action of the force exerted by the compressed air when the device is actuated, to free a passage for the compressed air, and returns to its initial shape when the device is at rest.
- said recess delimiting the metering chamber is non-deformable and moves in translation downwards, away from the upper wall of the expulsion duct, when said thinned zone deforms when the device is actuated, thus freeing said passage. for compressed air in said expulsion conduit, allowing the total expulsion of the product located inside said metering chamber.
- said upper part of the insert comprises under said recess, a stud extending at rest to a point located away from a fixed element of the device, for example the pump body, and abutting against it upon actuation of the device, thus limiting the deformation of said insert and the translation of said recess and defining a calibrated passage for compressed air.
- said upper part of the insert has on its side wall one or more ribs or grooves defining precisely the location of the thinned zone intended to deform during actuation of the device.
- said insert can have, in horizontal section, a circular, oblong or rectangular shape.
- said insert is made in one piece and can be fixed to said support piece by fitting or by snap-fastening.
- FIG. 1 shows a general schematic view of the inhalation device according to the invention
- FIG. 2 shows an enlarged view of the part of the inhalation device comprising the metering chamber, according to a first embodiment of the invention
- FIG. 3a shows a view similar to that of Figure 2 for a second embodiment of the invention, at rest; and - Figure 3b shows the same view as that of Figure 3a, during operation of the device.
- the inhalation device comprises a compressed air pump 1 comprising a pump body 2 and a pump chamber 4, said pump 1 being intended to expel compressed air when the device is actuated .
- Said pump chamber 4 is connected, via a valve 5, to an expulsion conduit 6, itself connected to an outlet nozzle 7 opening into an inhalation member 8 adapted to facilitate inhalation by the patient.
- This organ 8 can for example be a mouthpiece, when the product is administered orally.
- the device also comprises a body 9 comprising a support piece 10, which supports the outlet nozzle 7 and said inhalation member 8, and which is crossed by said expulsion duct 6.
- the pump 1 can be dissociated from the rest of the device and snaps onto said body 9 of the device during assembly, by means of said pump body 2.
- the pump body 2 and the body 9 of the device can also be integral with one another.
- the device further comprises a product reservoir 11, connected to said expulsion conduit 6 by a small hole 12.
- the reservoir is located above said expulsion conduit 6, as shown in the figures.
- Said small hole 12 forms a part of the metering chamber 13 which opens into the expulsion duct 6 and which comprises an insert 14 projecting from an upper part 16 inside said expulsion duct 6.
- This insert 14 comprises a lower part 15 which can advantageously be cylindrical but which can also have an oblong or rectangular shape in horizontal section.
- This lower part 15 of the insert 14 is fixed on said support piece 10 of the body 9 of the device, advantageously by fitting or by snap-fastening by means of lugs 17.
- the lower part 15 of the insert 14 is extended by an upper part 16 projecting inside the expulsion duct 6 through an opening provided for this purpose in said duct.
- the insert 14 For proper operation of the device, the insert 14 must be introduced into the expulsion conduit in a sealed manner. It is essential that the lower part 15 of the insert, located outside the expulsion duct, be non-deformable and remains fixedly in sealed contact with the support part 10 during the operation of the device to avoid any possible leakage.
- the insert 14 is made of a relatively flexible material making it possible to provide said seal at the opening of the conduit through which the insert enters the latter.
- the metering chamber 13 is therefore placed at all times in and just around the expulsion conduit 6 and it is not necessary to provide a complex mechanism for moving said metering chamber out of said conduit. It can therefore be said that the metering chamber 13 is fixedly disposed in said expulsion duct 6.
- the small hole 12 of the metering chamber 13 is closed in leaktight manner by a removable sealing device 21 located inside said reservoir 11.
- This sealing device 21 is removed from the hole 12 to allow the product to be loaded into the metering chamber 13 and then replaced for actuation of the device.
- the upper part 16 of the insert 14, protruding in the expulsion duct 6, has an approximately frustoconical shape and has a side wall 18 extending from said lower part 15, as well as in its central part in opposite the hole 12, a recess 19 adapted to retain a dose of product and delimiting the metering chamber 13.
- FIG. 2 A first embodiment of the invention is shown in Figure 2.
- the insert 14 is rigid and undeformable in its entirety.
- the side wall 18 of its upper part 16 therefore extends only over part of the height of the expulsion duct and does not come to bear against the upper wall 22 of said duct, to preserve a passage 23 for the compressed air inside said conduit 6 when the device is actuated.
- a cycle for expelling a dose of product is broken down into the following stages:
- the sealing device 21 located in the reservoir 11 is removed from the hole 12, that is to say from the dosing chamber 13, and the latter is filled with product.
- the product therefore falls by gravity or with the help of an external means, through the hole 12 in the recess 19 of the insert 14.
- the sealing device 21 of the reservoir returns to plug said hole 12 in a sealed manner.
- the device is then actuated and the compressed air from the pump 1 passes from the pump chamber 4 into the expulsion duct 6 via the valve 5 and then, through the passage 23, completely empty the metering chamber 13 of the product it contains. Said dose of product is thus distributed in spray form by the outlet nozzle 7 in the inhalation member 8, then to the patient.
- the rigidity of the insert 14 is increased by providing a stud 20 disposed under said recess 19 of the insert 14 and extending from said recess 19 to a fixed element. of the device, for example the pump body 2 as shown in the figures, on which it rests. This stud 20 can be in one piece with the insert 14.
- a second embodiment of the invention is shown in Figures 3a and
- the upper part 16 of the insert 14 is deformable under the effect of the pressure of the compressed air and the side wall 18 extends over the entire height of the expulsion duct 6 to come to rest on its upper wall 22.
- the expulsion duct 6 is therefore closed by the insert 14 and the metering chamber 13 is therefore completely sealed when the device is not actuated.
- the seal is ensured by the above-mentioned removable sealing device 21 placed inside the reservoir 11 and at the level of the expulsion duct 6, the seal is therefore provided by the insert 14.
- This absolute seal prevents contamination of the product between the time when the metering chamber 13 is loaded and the time when it is emptied by actuation of the device.
- the upper part 16 of the insert 14 is therefore deformable under the effect of the pressure of the compressed air.
- the compressed air sent by the pump 1 in the expulsion conduit 6 via the pump chamber 4 and the valve 5, abuts against the side wall 18 of the insert and causes the deformation of the latter, thereby freeing a passage for compressed air in the expulsion duct.
- the compressed air can therefore completely empty the dosing chamber 13, the product being transported to the outlet nozzle 7 and then distributed to the patient via the inhalation member 8. It should be noted that even if part of the metering chamber 13 is deformable, the latter remains permanently in the expulsion duct 6.
- the upper part 16 of the insert 14 has in its side wall 18, at the junction of the upper 16 and lower 15 parts of the insert 14, a thinned zone 25.
- This thinned zone 25 has the function of forming a kind of flexible and elastic hinge which folds under the effect of the pressure of the compressed air to free said passage for the compressed air and which resumes its initial shape when there is no more air compressed in the expulsion duct 6.
- the recess 19 delimiting the metering chamber 13 does not deform itself, and moves in translation away from the wall upper 22 of the expulsion conduit 6.
- This preferred implementation of the invention ensures that the volume of product contained in the metering chamber 13 does not vary, even after several actuations of the device, that is to say after several deformations of the insert 14. To avoid ter that the deformation of the insert 14 is not too great, which could lead to a deformation of the recess 19, a stud 30 is advantageously provided under the recess 19.
- This stud generally in one piece with the insert 14, extends at rest to a point located away from a fixed element of the device, for example the pump body 2 as shown in the figures, and abuts against the latter when the device, thus limiting the deformation of the insert 14 and the translation of the recess 19, said stud 30 further defines a calibrated passage for compressed air, thus ensuring identical distribution of each dose of product.
- the insert 14 according to the invention is made in one piece and can be made of elastomer or any other sufficiently flexible material, the deformation of said insert possibly being due either to the material constituting the insert, or to the shape of said insert, such as previously described.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9404711 | 1994-04-20 | ||
FR9404711A FR2718968B1 (fr) | 1994-04-20 | 1994-04-20 | Insert délimitant une chambre de dosage d'un inhalateur. |
PCT/FR1995/000474 WO1995028980A1 (fr) | 1994-04-20 | 1995-04-12 | Insert delimitant une chambre de dosage d'un inhalateur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0759790A1 true EP0759790A1 (fr) | 1997-03-05 |
EP0759790B1 EP0759790B1 (fr) | 1998-07-01 |
Family
ID=9462300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95917384A Expired - Lifetime EP0759790B1 (fr) | 1994-04-20 | 1995-04-12 | Insert delimitant une chambre de dosage d'un inhalateur |
Country Status (6)
Country | Link |
---|---|
US (1) | US5724960A (fr) |
EP (1) | EP0759790B1 (fr) |
JP (1) | JPH09511937A (fr) |
DE (1) | DE69503243T2 (fr) |
FR (1) | FR2718968B1 (fr) |
WO (1) | WO1995028980A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0705614B1 (fr) * | 1989-04-28 | 2002-09-25 | Riker Laboratories, Inc. | Dispositif d'inhalation de poudre sèche |
US6029661A (en) * | 1991-08-26 | 2000-02-29 | 3M Innovative Properties Company | Powder dispenser |
FR2753791B1 (fr) * | 1996-09-20 | 1998-11-20 | Distributeur de poudre avec chambre de dosage basculante | |
US6626173B2 (en) * | 2001-01-08 | 2003-09-30 | Iep Pharmaceutical Devices Inc. | Dry powder inhaler |
CN100431634C (zh) * | 2005-04-04 | 2008-11-12 | 陈庆堂 | 干粉气溶胶化吸入器 |
DE102006044756A1 (de) * | 2006-09-20 | 2008-04-10 | Boehringer Ingelheim Pharma Gmbh & Co. Kg | Inhalator |
EP2676694B1 (fr) * | 2007-06-15 | 2017-04-26 | Boehringer Ingelheim International GmbH | Inhalateur |
EP2534958A1 (fr) | 2007-12-14 | 2012-12-19 | AeroDesigns, Inc | Administration de produits alimentaires sous forme d'aérosols |
EP2082762A1 (fr) * | 2008-01-24 | 2009-07-29 | Boehringer Ingelheim International Gmbh | Inhalateur |
JP5720009B2 (ja) | 2009-05-18 | 2015-05-20 | アダミス ファーマシューティカルズ コーポレーション | ドライパウダー吸入器 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2570774A (en) * | 1947-10-21 | 1951-10-09 | Frank P C Davis | Insufflator |
DE8703534U1 (fr) * | 1987-03-10 | 1987-08-06 | Brugger, Stephan, Dipl.-Wirtsch.-Ing.(Fh), 8137 Berg, De | |
DK479189D0 (da) * | 1989-01-06 | 1989-09-28 | Hans Gernot Schenk | Inhalator |
DE4027391A1 (de) * | 1990-08-30 | 1992-03-12 | Boehringer Ingelheim Kg | Treibgasfreies inhalationsgeraet |
GB9025705D0 (en) * | 1990-11-27 | 1991-01-09 | Britains Petite Ltd | Powder inhaler |
IT1248059B (it) * | 1991-06-14 | 1995-01-05 | Miat Spa | Insufflatore multidose per farmaci in polvere |
EP0632734B1 (fr) * | 1992-03-25 | 1998-06-10 | Tebro S.A. | Distributeur a jet de poudre pour traitements par inhalation de medicament |
FR2700279B1 (fr) * | 1993-01-14 | 1995-03-17 | Valois | Dispositif portatif pour projeter des doses d'une substance fluide à l'aide d'un flux d'air comprimé. |
-
1994
- 1994-04-20 FR FR9404711A patent/FR2718968B1/fr not_active Expired - Fee Related
-
1995
- 1995-04-12 WO PCT/FR1995/000474 patent/WO1995028980A1/fr active IP Right Grant
- 1995-04-12 DE DE69503243T patent/DE69503243T2/de not_active Expired - Fee Related
- 1995-04-12 US US08/727,596 patent/US5724960A/en not_active Expired - Fee Related
- 1995-04-12 EP EP95917384A patent/EP0759790B1/fr not_active Expired - Lifetime
- 1995-04-12 JP JP7527391A patent/JPH09511937A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9528980A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2718968B1 (fr) | 1996-07-26 |
WO1995028980A1 (fr) | 1995-11-02 |
DE69503243T2 (de) | 1999-04-08 |
FR2718968A1 (fr) | 1995-10-27 |
JPH09511937A (ja) | 1997-12-02 |
EP0759790B1 (fr) | 1998-07-01 |
DE69503243D1 (de) | 1998-08-06 |
US5724960A (en) | 1998-03-10 |
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